Olesen, Ole B.; Ruggiero, John - In: European Journal of Operational Research 235 (2014) 3, pp. 798-809
The variable returns to scale data envelopment analysis (DEA) model is developed with a maintained hypothesis of convexity in input–output space. This hypothesis is not consistent with standard microeconomic production theory that posits an S-shape for the production frontier, i.e. for...